7400 competition entry: TV Auto-off from the ’80s

Are you tired of watching TV and want to turn it off quickly from your armchair? Viktor’s TV Auto-off shows you how:

The idea was to have a tiny light come up right next to the TV after a preset period of time. If my grandpa is watching TV he would notice it and press a small button on his armchair, and the small light switches off. If grandpa is sleeping he doesn’t notice the small light and so he doesn’t press the small button, so after a few more seconds the unit switches the TV off.

Build something that uses or abuses a logic chip and get amazing boards, tools, and other swag. The Open 7400 Logic Competition promotes awareness of the basic building blocks of modern circuits. Devious geeks ignited the computer revolution with discrete logic computers, what can you do? Details and entry form here.